Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
The cometary HII regions of DR 21: Bow shocks or champagne flows or both?
As of 8 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 2 inbound Pith citation observations for arXiv:1401.1343.
A citation records a reference. It does not transfer a finding from one paper to another.
Coverage vector
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-08T06:32:00.761636+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-07T20:40:56.985487Z
A source-named dated measurement, never combined with another source.
Source: cited_works
Reference resolution
0 of 0 outbound references displayed
- verified exact0
- verified fuzzy0
- unresolved0
- parse uncertain0
- malformed identifier0
- metadata mismatch0
External citation measurements
No source-named external measurement is stored.
Outbound references
No outbound reference observations are available for this paper version.
Pith citing papers
Observation e520eb10-3228-4d86-88d0-9a64b12f5d97 · inbound
Bipolar HII regions Produced by Cloud-Cloud Collisions cites this paper.
Bipolar HII regions Produced by Cloud-Cloud Collisions The cometary HII regions of DR 21: Bow shocks or champagne flows or both?
Reference 55
- Resolution
- unresolved
- no resolver link, observed 2026-07-31T15:39:29.230709Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation dc91a6de-a30b-4964-8851-ccc88fd001c7 · inbound
Why do massive stars form bow shocks? Bulk ISM motion as the main driver of bow shock formation and geometry cites this paper.
Why do massive stars form bow shocks? Bulk ISM motion as the main driver of bow shock formation and geometry The cometary HII regions of DR 21: Bow shocks or champagne flows or both?
Reference 45
- Resolution
- unresolved
- no resolver link, observed 2026-08-07T20:40:56.985487Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.